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Genetic Code and Regulation

Genetic Code and Regulation
In some organelles in eukaryotes, the genetic code for some codons

differs from that used in prokaryotes
None of these
are partially same
are same

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Genetic Code and Regulation
How many amino acids will be encoded by 5' GAU GGU UGA UGU 3' sequence?

One
Two
Four
Three

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Genetic Code and Regulation
Which of the following techniques was carried out by Nirenberg and Matthaei in 1961 to determine the first codon?

Mixed co-polymer mRNA synthesis
Labeled peptide binding to a ribosome
None of these
In vitro synthesis of a polypeptide using UUUUU

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Genetic Code and Regulation
Translation begins

in nucleus
on the lagging strand
at the replication fork
at the start codon

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Genetic Code and Regulation
Bacterial protein called catabolic activator protein (CAP) is an example of

positive control of gene expression
None of these
second type of positive control of gene expression
negative control of gene expression

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Genetic Code and Regulation
Which of the following has been used as an evidence that primitive life forms lacked both DNA and enzymes?

All of these
DNA and enzymes are only present in the most advanced cells
Advanced cells lack RNA
RNA can both code genetic information and act as a catalyst

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